Abstract: To provide a rotating member that allows formation of protrusions to be dug into an opposite surface with a simple configuration, and that can prevent a direction-dependent reduction of anti-slip effect and provide sufficient slip prevention in the direction of torque as well as in the radial direction, and a method of forming this rotating member. The rotating member has a boss and an anti-slip surface on at least one of both axial end faces of the boss. The anti-slip surface includes a plurality of crater-like depressions each having a peripheral protrusion. At least some of the plurality of crater-like depressions are arranged serially to form a plurality of crater chains.

Abstract: To provide a chain guide that can improve transportability and assembly operation efficiency, while also ensuring stable running of a timing chain and enhancing durability, with a simple structure. The chain guide has a guide shoe that slidably guides a chain, and a chain guide body that supports the guide shoe. A compression limiter having an attachment hole through which a mounting bolt for attaching the chain guide to an attachment target member passes is fitted in a fixing through hole extending through the chain guide body in a width direction thereof. A compression limiter holding mechanism is provided either to the compression limiter or to a hole rim part including the fixing through hole of the chain guide body in order to hold the compression limiter.

Abstract: To provide a sprocket that reduces the influence of tension fluctuations concurrent with load torque variations, that suppresses noise and vibration, and that prevents an increase in tension fluctuations, noise, and vibration even when the chain tension is low and the load torque is small, or in regions where a chain and the sprocket engage without being affected by the tension. The sprocket has a plurality of teeth mating with the chain that are provided with an equal pitch therebetween, and that include teeth with different working pressure angles relative to the chain.

Abstract: An object of the present invention is to provide a tensioner lever that allows for reduction of the number of components and the weight, while being able to prevent vibration and noise during the running of the chain. The tensioner lever according to the present invention is configured such that a lever body rotatably supported on an attachment surface is urged to rotate toward the chain by the resilient force of a coil spring. The coil spring includes a pressing arm extending from one end of a helical part and contacting the lever body, and a support arm extending from another end of the helical part and supported by the attachment surface. The lever body includes an engagement portion configured to allow the support arm of the coil spring to be hooked thereon by resilient deformation, and to removably engage therewith by rebound resilience of the coil spring.

Abstract: To provide a tensioner capable of keeping oil pressure in an oil pressure chamber stable with a simple structure. The tensioner is equipped with a pressure adjusting mechanism that adjusts oil pressure in the oil pressure chamber and includes an adjustment space formed in a housing and communicating with the oil pressure chamber, a movable member disposed such as to be movable to and from the oil pressure chamber, and a pressure adjusting biasing unit that biases the movable member toward the oil pressure chamber. A liquid tight seal is maintained between the movable member and an inner wall of the adjustment space, between a position where the movable member has moved closest to the oil pressure chamber and a position where the movable member is farthest from the oil pressure chamber.

Abstract: A low-temperature storage system 100 is provided, which can, with a simple structure, minimize heat transfer into the low-temperature storage chamber, reduce the operation noise, allow easy positioning of a reciprocating part inside the low-temperature storage chamber, and preclude device bulkiness outside the low-temperature storage chamber. The low-temperature storage system 100 includes a low-temperature storage chamber 110, and a transfer mechanism 120. The transfer mechanism 120 includes an in-storage unit 121 and an external unit 140. The in-storage unit 121 includes a reciprocating part 122 that holds the storage objects C, a turn guide 126 that guides the reciprocating part 122, and a lift member 131 that causes the reciprocating part 122. The external unit 140 includes a torque transmission part 141, a lift transmission part 147, and a detachable moving part 150 that drives the torque transmission part 141 and lift transmission part 147.

Abstract: The present invention provides a chain tensioner that automatically adjusts flow path resistance inside an oil leak path with a simple configuration to make it possible to reduce a change in damping characteristics resulting from a change in oil temperature and reduce an increase in manufacturing cost. In the chain tensioner, a pressure oil chamber is provided with an oil leak path communicating with an outside of the chain tensioner, the oil leak path contains a movable piece which is movable with a temperature-dependent deformation member that deforms according to oil temperature, and the movable piece is formed into a shape that changes flow path resistance of the oil leak path according to a position to which the movable piece is moved.

Abstract: To provide a universal design chain guide that can provide a position, track, and length of contact between the chain guide and the chain for optimal performance even when used with different types of chains. The chain guide includes a guide surface slidably guiding a running chain and at least one mounting part. The guide surface includes a first guide surface extending along a longitudinal direction and a second guide surface parallel to and protruding more than the first guide surface. The second guide surface protrudes from the first guide surface with varying heights along the longitudinal direction.

Abstract: To provide a chain tensioner that can suppress oil leakage from a gap between a plunger bore and a plunger to achieve stable damping characteristics and that can avoid an increase in production cost, with a simple structure. The chain tensioner includes a packing member that is provided on an inner circumferential side of the plunger bore and that suppresses oil leakage from a cylindrical outer surface of the plunger. The plunger is provided with an oil leak passage that extends from an oil pressure chamber inside the plunger to the outside.

Abstract: To provide a tensioner that has a simple structure and is easy to assemble, and is configured to smoothly relieve pressure during oil release with reduced flow resistance so that the oil pressure in an oil pressure chamber is kept stable in a favorable manner. A relief valve unit includes a cap member that fits with a seat member to retain a stopper member inside the seat member. An external relief hole, which causes a relief-side space in a plunger hole to communicate with the outside of a plunger, opens radially in an outer circumferential surface of the plunger.

Abstract: Provided is a transfer cart that that has a simple structure, facilitates operation in front and back spaces of a moving direction, and does not take up a redundant transfer space in a locations where operation is not performed. The transfer cart includes a running frame, a main carrier capable of carrying thereon an object to be transferred, and moving-direction operation decks disposed at front and back of the moving direction on the main carrier and running frame. The moving-direction operation decks are configured to change angle with the main carrier in accordance with the radius of curvature of a track, and configured to have a variable height mechanism to be able to change height thereof in the up and down direction.

Abstract: An orifice member is disposed in a plunger including a plunger hole that forms a hydraulic chamber in conjunction with a plunger housing hole in a housing. The orifice member includes a deformed fitting section deformed to fit on the inner circumferential surface of the plunger hole, a communication section that causes a surface in contact with the top surface on the front side of the plunger hole and a surface on the hydraulic chamber side to communicate, and an orifice groove that communicates with the communication section and an external relief hole provided in the plunger on the surface in contact with the top surface on the front side of the plunger hole to constitute an orifice.

Abstract: An object of the present invention is to provide a chain guide that can improve functional properties of a chain drive system. The chain guide of the present invention is attached to an engine block by a mounting bolt and slidably guides a running chain. The chain guide includes a mounting part provided with a shaft hole through which a mounting bolt is passed, and an oil jet passage for injecting lubricating oil, supplied to the shaft hole at a predetermined pressure, toward the chain.

Abstract: An elongated object guiding device includes links arranged in series. Adjacent ones of the links are pivotally coupled to each other. An accommodation chamber is defined in the links. Each link includes an inner recess, an inner projection, an outer recess, and an outer projection that limit a pivoting range of the link and an adjacent link so that the links are pivoted between a straight state and a bent state. Each link includes a separating member that separates elongated objects accommodated in the accommodation chamber from each other. Each separating member is pivotally coupled to an adjacent separating member. Each separating member includes a through-hole and a sliding portion that limit a pivoting range of the separating member and an adjacent separating member so that a limit on a first side of the pivoting range is the straight state.

Abstract: A seal chain includes two inner link plates opposed to and spaced apart from each other, a tubular bushing, opposite ends of the bushing being respectively joined to the two inner link plates, a pin rotationally inserted into the bushing, a tubular roller into which the bushing is inserted, the roller being rotationally supported by the bushing, and two outer link plates arranged to externally hold the two inner link plates in between, opposite ends of the pin being respectively joined to the two outer link plates. A recess into which an end of the roller is inserted is formed in an inner surface of each of the inner link plates.

Abstract: An elongate object guiding device is provided with a protective guiding portion, guide rails, rollers, and magnets. The guide rails have magnetic guide surfaces that guide the protective guiding portion when the protective guiding portion reciprocates in a longitudinal direction while forming a cured part. The rollers are provided on the protective guiding portion, and are disposed in such a way as to be capable of rolling along the guide surfaces. The magnets are provided on the protective guiding portion in such a way as not to come into contact with the guide rails, and cause a magnetic force to act on the guide surfaces in such a way as to maintain a state of contact between the rollers and the guide surfaces.

Abstract: To provide a tensioner and a relief valve unit that enable a reduction in the number of parts to be processed and the number of assembling steps, reduce the amount of oil flowing out to the outside, prevent damage to the check valve, and improve the oil recovery rate. The relief valve unit that releases oil when pressure inside an oil pressure chamber reaches or exceeds a predetermined high pressure includes a check valve unit that stops reverse flow of oil flowing into the oil pressure chamber as a valve element, the check valve unit being slidably inserted in the relief valve unit. The relief valve unit includes a unit pressing spring that presses the check valve unit toward a relief valve seat. The check valve unit includes an oil passage for allowing oil to flow between an inner side and an outer side of the check valve unit.

Abstract: An object of the present invention is to provide a tensioner lever that can reduce vibration and noise when the chain runs, and realize smooth attachment into an engine with minimal deformation of the lever body with a simple configuration. A tensioner lever according to the present invention includes a lever body and a torsion coil spring pressed the lever body toward the chain. The lever body includes a stopper member mounting part where a stopper member by which the support arm of the torsion coil spring is locked and which retains the torsion coil spring in a compressed state is removably mounted. The stopper member mounting part is located closer to a distal end of the lever body than a center position in the longitudinal direction of the lever body, or a center of gravity position of the lever body.

Abstract: Provided is a sprocket which suppresses generation of order sounds corresponding to cycles and prevents increase in tension fluctuations, noise, and vibrations caused by resonance while alleviating the influence of the tension fluctuations corresponding to load torque fluctuations and suppressing noise and vibrations. A plurality of teeth formed to engage with a chain are arranged to form a phase fluctuation pattern of a waveform having a phase which fluctuates between positive and negative sides, and the phase fluctuation pattern is set to have parts having different wavelengths.

Abstract: Provided is a tensioner capable of reducing a machining or mounting load and preventing leakage of oil from a surface for mounting a tensioner with a simple configuration. A tension body having a plunger-receiving hole into which a plunger is slidably inserted is configured to have a projection portion on a mounting surface that face a wall surface having an oil discharge hole of amounting target object. The projection portion is configured to be inserted into the oil discharge hole and to be continuously connected to the oil supply path formed in the tensioner body to form an oil passage.